I don't own these, but have worn them. As no one has yet reviewed them I felt the need to. First off, I had to downsize alot to get a tight fit (I wear like a 10 in 5.10, and I wore 41s, i think that's an 8?), but once you get the fit... oh my god. there is NO dead space. what's more impressive is that despite how obviously agressive they are, they don't contort your foot in an unnatural way at all, and are therefore VERY comfortable. I felt like i was cheating when I tried down-toe moves with these shoes. Make no mistake, these shoes are not for everyone, and really only people that have sick nasty footwork are going to be able to effectively use all that scarpa has put into these things. I would love to have these on a problem with heavy toe hooks,one toe one heel compression moves and shi. These shoes have THE best heel of any shoes i have ever put on. also, the MSRP of $170 is wrong. expect about $145.